Control for book-sewing machines



Nov. 16, 1943. w. B. HILDMANN 2,334,265

CONTROL FOR BOOK SEWING MACHINES Filed Au 8, 1942 s Sheets-Sheet 1 Nov.16, 194.

w. B. HILDMANN 2,334,265 CONTROL FOR BOOK SEWING MACHINES Filed Aug. 8,1942 3 Sheets-Sheet 2 NW. 16, 1943. w. a. HILDMANN CONTROL FOR BOOKSEWING MACHINES Filed Aug. 8, 1942 3 Sheets-Sheet 3 Rye/afar,

Patented Nov. 16, 1943 2,334,265 CONTROL FOR BOOK-SEWING MACHINESWilliam BrHildmann, Chicago, 111., assignor to Brock & Rankin, Chicago,111., a corporation of Illinois Application August 8, 1942, Serial No.454,160

20 Claims.

This invention pertainsto the bookbinding arts, and more particularly tobook Or signature sewing machines.

One of the principal objects of the invention is the provision ofautomatic control means for:

a known type of book sewing machine wherein there is a known means forperforming certain cutting and pasting operations on book signatures orthe like, the invention having to do with the provision of unitarycontrol means and actuating mechanism for the cutting and pasting meansof such nature that these operations will be accurately timed withrespect to each other and to certain feeding operations performed by theattendant.

A further object is to provide improved control means which willeliminate certain previously necessary pedal controls in a machine ofthe class described, whereby to simplify the operators duties, relievefatigue and increase cupational accuracy with consequent increase inproduction output and decrease in defective or rejected book forms.

Still more particularly, it is an object to provide automatic controlmeans for amachine ofthe class described arranged and constructed to beengaged by the attendants handyas a natural continuation of motionsinvolved in themanual feeding routine customarily employed in the use ofthis type of machine, whereby to eliminate relatively complicated pedaloperations as well as visual estimations in the timing of certain feedmeans with respect to said pedal operations.

Other objects are to provide both electrical and electromechanicalcontrol -means adapted for coaction with the known construction ofmachines of the class specified, such that the invention may be appliedto existing machines or built-in'as standard equipment therefor; toprovide a touch-responsive control which forms part of the signaturefeeding means in's'uch manner as to facilitate accurate operationof thenovel control by a continuing movement-of the hand in the usual feedingtechnique; to provide a simple, adjustable timing control unit adaptedto be actuated directly from themain drive shaft of the machine; toprovide cutter and paster actuating controls adapted for directcooperation with existing control elements in such a machine; to providecontrol means for efifecting timed plural operation in alternation ofcertain cutting and pasting means.

Other objects, advantages, andaspects of novelty relate to details ofconstruction, operation,

and functional combination of the severalparts especially of thepreferred embodiments hereinafter described in view of the annexeddrawings in which:

Fig. 1 is a skeletonized perspective layout of the novel control meansdisposed for cooperation with parts of a known type of book sewingmachine;

Fig. 2 is an enlarged sectional detail along lines 2-2 of Fig. 1 showingthe master control or touch-responsive actuating means ofthe invention;

Fig. 3 is an elevational detail of the timin switch means;

Fig. 4 is a top plan view of the timing means of Fi 3;

Fig. 5 is a side elevational detail of the cutter regulating means andactuating cam;

Fig. 6 isa front elevational view, partly in section, of the cutterregulating and drive means shown in Fig. 5;

Fig. '7 is a circuit diagram;

Fig. 8 is a skeletonized perspective layout of a modified form of thenovel control means;

Fig. 9 is an elevational detail of the control cam as viewed in thedirection of lines 9-9 of Fig. 8.

Referring to Fig. 1, there is shown a wedgeshaped saddle or signaturefeed plate l5 such as employed in a known type of book sewingmachine,and this feed plate includes a stationary section I5a upon whichthe attendant places a group of gathered and printed signatures or bookleaves I6 which have been opened up at the middle fold ll of the groupso that said middle fold will rest on the edge of the wedge feed plate,with the bottom edge l8 of the signatures opposite a feed pawl or fingerl9.

When the attendant has fed a signature I6 into .the position shown, shewill customarily actuate a pedal control (not shown) commonly employedin such machines, which sets the latter into operation to cause, amongother things, the feed pawl or finger l9 to shift toward the left andtransport the book signatures IS onto a movable plate section l5b of thefeeding wedge,

whereupon section [51) moves forward, as indicated by the directionalarrow at the left of the latter, toward certain sewing means (not shown)including a plurality of needles which reciprocate Vertically in slots28 formed along a needle late 2|.

Following the feeding of a desired number of signatures as aforesaid soas to forma book, the machine will have sewn thebinding edges ll of theseveral signatures in a known manner, and

The feeding pawl i9 moves in timed relation to the sewing and pastingmeans of the machine, all being driven from a common .source, name y themain drive shaft 45, which rotatesa compound cam structure including;cams 45, T3,, and a large internal cam Hit. :A long lever T51 ispivoted at one end, as at I52, and at its other end it connects to aball and socket lever 1153, which" in turn rocks a bell crank lever I54connecting through a long drive rod I55 to feed pawl 19.

'Ihellever i=5] hasanam'rollerinotseen) which rideslin :the pam'itrackof camrlfiil in a known manner, such that lever I5! oscillates :up'l-and .down so dong :as rshaft ii-'6 dictates, :cansing :lever 41:54.to oscillate iromlleft :to right (with :a corre- .sponding reciprocationof the longdrivins .arm I55, thus causing pawl E9 to move back andrforth:on the .signaturereceiving saddle 115a,.

Etwill be understood tthadz'ithe structural-land functional details:of-dihe signature-dazzling, :sew-

ing, and cutting mechanisms of this machine lcon'stitute .partof the(known art and are .not per se claimed as my invention, by :neaison'rofwhich'the'said mechanisms are demriioedqonly in such detail herein asmay be calculated tto Iaf- =ford an understanding of :the generaloperation of such .aibooksewing machine :inso ifazr asdtrcylates to theimprovements herein disclosed iand claimed.

In connection with the sewingopera'tionsni'tzis pointed out that thethread :cntting operation merely requires the shifting of the slottedrpllate 2| in one or the other indicated direction from v whateverposition it happens to :be in .at .the

time the sewing operation is completed,

As a further incident to the book-forming operations performed by such:a machine, the .end sections (i. :e. the first and Ilast signaturesrare tipped close to the binding edge 5! 7 -with paste :so

astosecureea-ch-of these signatures additionally I "-In Fig. 1, there*is shown one end portion .of a pastetrough 25, which ordinarily extends:across the frontof 'the machine -a distance equal to'zthe lengthbf thefeed-plate sections Ilia. or El'fib, the needle plate 12-! being :ofsimilar lengt-h.

A paste tipping ball :or applicator it is rock- -aibl y mounted on -ashaifit 2-! for movement from its normal position (shown iin full lines)in the paste trough, 'to the dotted line xposifion'ngaiinst one of thesignatures, first or last, :as the case may be, it being necessary.usualiy :to actuate the pastor twice foreach book.

The paste-tipping or applying movementsuof the bail are effected byioscillationoof \coacting gear segments "28 and 2 9 responsive to "thevertical reciprocation :of :rod :30 connecting lever means 8-9 at itsupper :end with :an .-actuating lever 32 at its "lower .end. Lever32'2is pivoted :at

33 :and -is normally pulled upwardly by spring means 34 to shift rod 361upwardly and-meet a lowering of the paste-applying bail.

However, upward movement of actuating lever "32 is prevented' byealock-out lever 35 having a restraining the latter from pivotal movementupwardly so long as the look-out lever remains in the normal positionshown. A re shaft 38 extends across the lower front of the machine andconnects at the opposite side thereof with an operating lever 39, whichis normally urged by spring means 40 in an anticlockwise direction so asto hold lock-out lever 35 in engagement "with the stud '37, therebypreventing actuation of the paster mechanism, particularly the rod 30,lever 3i, and gear segements 28-23.

The foregoing paster mechanism is old in the :art, and prior to thepresent invention, was actuated by pedal means (not illustrated) con-;nectedwith the long rock shaft 38 at the bottom of the machine in amanner to effect pivotal movement of the look-out lever 35 for the pur-:posesaforesaid.

The present invention dispenses with such peda1 control means, amongother things, and pro- -virles-:.automatic timing and actuating:mechanism including electrcmag-neticsmeans such as-thasolenoid 4|connecting with 1ever,.-35 ithroughsanielraiti-vely ;yie1dable but stiffcOiLzspring 41-2,, in .such manner that upon :ensrgization of thesolenoid iitstarmatureisli! will :be attracted andrraised with a:consequent clockwise rockingofzshaft 38, :resulting .in release of thelodk-outrlever means 35-35-41, so {that spring 3'4 :may elevate rod e39and actuate the paste tipping: hail means '26.

.The lock-out lever system is restored quickly to locked :condition :asthe \paster means .26 is =mcked back toward normal position in the pastetrough, and this is accomplished byiaction -of a cam 45 drivenconstantly by the main power shaft '45. When :the actuating lever rocksupwardly :as aforesaid, a'ccoacting cam rocker. arm fl l is permitted:to rock counterclockwise .sothat its =ca'm :roller linnorma'lly ridingthe :periphery of :cam Irina-n move from :the dwell 45a :of the cam to alow point .or land 4511 thereon; As the dwell portion .of :the cam comesaround again cam rocker 41 and actuating lever32 are rocked clock-:wisaxandlspring "40 causes the lock-out lever to :re-engage lockingstud 3-1. The aforesaid lever and :ca-mimechanism is part of the knownmachine and .does not constitute part of the inven- Ltion :per :seexcepting only insofar as it is actueated ibyithe novel controlmeans ofthe invention, and functions in combination with :the latter.

Means is provided in the known machine-for shifting the needle plate 2alternately in the direction of its length, as indicated by thedirection-al arrows, this being done to effect a-cuttingofthe severalleads of thread utilized in sewing the signatures together. The shearmeans for :actually cutting the threads does not constitute part of thisinvention and therefore need not ibe shown in detail. However, thepurpose o'fshifting the needle plate alternately as aforesaid 'is tocause "the threads to engage stationary shear edges as the group of sewnsignatures is pushed forward toward the machine.

5A plate-shifting lever 53 is arranged to be moved back and forth asaforesaidbya crank 5| adapted to be rocked by lever means 52 (see alsoFig. 6) *having an end roller 53 which works in a cam track '54 intheface of a cam 55 -'(Fig.' 5 also), it being pointed out that the camtrack 54 has a plurality of alternate low and high points 54a and 541),respectively, so'that as the the discharge side 'of -.cam rotates in onedirection, the lever arm 52 match 3'6 into'wlrich fits .a .stud '33! onlever .32

"is rocked up and down with consequent alternate vshifting. of theneedle plate 21. a l

(not shown) and r The cutter cam 55 is steppedrotatively-in acounterclockwise direction by a stepping pawl 51 (Figs. and 6)engaging-in a toothed ratchet member 58 by rocking movement of a bellcrank 59 as a result of vertical reciprocation of a con- 1 necting rodor shipper 6|] pivotally connected as at 6| to a long lock-out'lever arm62 mounted on the same pivot 33 as the paster restoring cam means andactuating lever 32'.

A coil spring 63 normally pulls the look-out lever 6| upwardly so as toeffect movement of the shipper rod 60, but the stepped end 64 of thelever arm is also normally-engaged with the stepped end 65 of a dog-leglock-out lever 66 rockably mounted on a shaft 61, spring means 1 beingemployed tov urge the dog-leg. lever so as to hold its steppedlockingend 65 in locking engagement-with end 64 of the long lock-out beingpulled up by spring 63.

to rock the shaft 61 so as to withdraw lock-out parts ISL-65, said pedalmeans having been arranged closely adjacent the pedal means heretoforedescribed for rocking'the' paster shaft 38.

According to the present invention, such additional pedal means iseliminated, and electromagnetic means such asa solenoid 69, having anarmature 10 connected through pin and slot means I! to a lever arm 12,rocks the shaft 61 and releases the cutter lock-out means as aforesaidwhen the solenoid is energized.

The paster lock-out means'is restored to locking condition by a cam 13rotatingin step with the cam 45, and which is engaged by a cam roller 14on the lock-out arm 62, said roller being elevated by the arm to a.position where it will be engaged by the high part or dwell'lSa of thecam as a result of raising of lever arm 62 by spring 63 each time thelook-out lever is released, whereupon the lever arm is depressed by cam13, so that the look-out ISA-65 is restored.

In the manufacture of sewn'books, the first and last signatures, or endsections, are usually pasted to the adjoining signatures for addedstrength at the ends of the book, and the pastetipping operation musttherefore be performed twice during each sewing operation, whereas, the

' cutting operation occurs only once.

Heretofore on machines of the type described, the operator was obligedto estimate or guess at the timing of the operation of certain footpedals for actuating the paster=and cuttermeans, and this was usuallydone by watching the return of the signature feeding pawl I9 after thefirst and last signatures in each book had been fed,

it being the custom to operate either a paster or cutter pedal at a timewhen the pawl l9 had nearly returned to its starting position shown inFig. l. f I Thus, prior to the present invention,the operator wasobliged to feed the first signature by depressing the conventionalmaster control pedal then, as the pawl l9 was nearing home position,depress another paster control pedal to effect an operation of the pastebail 26; and still another cutter control pedal had to be depressed atthe proper instant with relation to an operation of the paster pedalprior to starting another book. The timing of these numerous pedaloperations was based entirely on the movements of the feeding pawl, andin actual practice defective books resulted from poorly judged tim- 'ingin the rapid manipulation'of three pedals while the operator was alsoemploying both hands in feeding signatures. Signatures were frequentlypasted or cut in the wrong places or not at all, so that apart from thenervous strain upon the operator, production losses were frequent.

The present invention obviates the necessity for guesswork in timing, aswell as complicated pedal operation, and provides a manually operatedcombination cutter and paster master con-- trol especially contrived tobring about two operations of the paster means and one operation of thecutter means for each single operation of said master control, and tocause actuation of the paster and cutter means in accurately timedrelation to each other, with a consequent elimination of defectivebooks.

As viewed in Fig. 1, the control means of the invention comprises atimer shaft journaled at one end in a simple bearing block 890. (Fig. 4)fixed on the main frame of the machine, and at the opposite end in aheavybracket plate 8|, likewise mounted on the machine frame, so thatthe timer shaft is mounted for rotation in parallelism with the maindrive shaft 46. A sprocket .83 is fixed on the timer shaft and is drivenby a sprocket chain. 84 froma smaller sprocket 85 fixed on the end ofthe main drive shaft.

It will be recalled that a complete revolution of the cams 45 and I3(and hence of the main shaft 46) sufiices to restore the paster andcutter lock-outs to locked condition, thereby fixing the limits for eachcycle of operation of these mechanisms, the cycle being started by themaster control as will hereinafter appear. For reasons to appear, thetimer shaft 88 is calculated to make only one-third of a revolution foreach complete revolution of the main drive shaft in order to adjust theoperation of the paster and cutter means to the average rhythm ofsignature feeding; hence, the ratio of sprockets 83 and 85 is 3:1.

Floating freely on the timer shaft all is a clutch disc 86 which isfixed to a timer disc or cam 81 movable therewith (see also Figs. 3 and4). The clutch disc is adapted to be rotated in an anticlockwisedirection by slip-clutch means including a clutch'washer (Fig. 4) 8B offelt or other suitable facing pressed against the clutch disc by a facecollar 89 urged by a spring 90 against the washer, a stop collar 9|adjustably secured on the shaft being used to provide for tensioning thespring. Another of the clutch washers 88 is also pressed against theback side of the timer disc by a second face collar .92 fixed on shaft8!).

Ordinarily, the aforesaid clutch means tends to carry the clutch discaround with shaft 80, but such rotation is prevented by a holding pawl(Fig. 3) rockably mounted by means 95 on the bracket plate 8| to pivotin the plane of the clutch disc, the upper or free end of this pawlbeing disposed to lie in the path of a relieved stop projection 91 onthe clutch disc, so that the latter is held against the driving effortof the clutch washers, which slip until such time as the holding-pawl 95is withdrawn, whereupon they exert suflicient frictional bearing againstthe clutch disc to carry the latter around with them.

Withdrawal or release of the clutch holding pawl 95 is effected throughthe agency of a corn necting rod 98 pivotally attached at one end to theholding pawl (Figs. 3 and 4), and at its opposite end to the armature 99of an electromagnetic tripping solenoid I00. Spring means (not seen) isarranged interiorlyof the solenoid nor- .ma'lly urging :the armature:outwardly thereof iinto itheiposition zshownfiniFig. land this iinlturnimgesthe holding .paWl 9.5 into zstoppingirelaswitches 15%| :tionwiimthetclutch'nisc.

Means sfor'ieffecting'energization iOf the several 'a-ctuatingrsolenoidsincludes a plurality of Finland :Iiil'3 A-(Fi gs. 3 and '4) ar-:rangedzat 2 equal id istances -"around *the periphery -'of the timer:disc, and teachhadjustably :attached .to bracket zB-l hy individual"bracket W4. to which -the' switches :are secured by means :of screws N5extending 'zthroughie'longated slots H15 in their drespectivenasings.

i'Each f the switches has an operating plunger so in, 1:02 a; and.Illita, :respeotiyely, and positioned michelipath :of a cam .rise 8711,on the timer-cam, such that as the latter rotates, the'ssw-itch-oper-'ating plungers "will :be successively depressed and :the severalswitches actuated to close control circuits shown in Fig. 7., shortly tobe'idescribed.

In 'orderto energize the main control solenoid 1B0 so as to release theholding pawl :95 and cause rotation of the timer cam, "there .isprovided 'a master touch-responsive :control in the formpf a plate'tmember "Hi1 attached by hinge .means IIH to lie normally in the planeof the front'face-of the feeding saddle or :wedge portion lfia, .asillustratedin'Fi-gs. 1 :and 2.

.Mountedb'ehin'd the touch plate H0 is :a sensitive switch ll-2 havingan operating plunger 41.3 disposed "behind the touch "plate and pressingagainst the :same near its hinge connection so as normally to .urgethe-latter :linto approximately flush relation with the front face :ofthe feeding saddle for wedge. When the operator wishes 'to actuate thismaster control member, she merely touches plate 41:0 'andpivots the samea slight amount, :as illustrated "by the dotted line position thereof inFig. 2, therebydepressing plunger I I3 sufficiently to operate switch [12.

Referring now to the circuit diagram of Fig. 7, operation of switch H2closes contacts! |.2a, I'I Zb thereof toacomplete a 'powerzcircuit viaconductors 1 I20, Iii-2d, 112e, and power source H2 (here shownconventionally as a battery, but contemplating any suitable source ofelectrical energy) whereby to energize the tripping so'lenoid Milthereby eiiecting withdrawal of the clutch holding pawl '95 toifre'e theclutch disc '95 and effect rotation of the timer disc 8 in the mannerheretofore explained.

The cam rise or nose f8 la "on'thetimer disc first engages and'depressesplunger'l'flla on the first control switch llll, closing contactsflila-l-Oib thereof to complete a power circuit via conductors 101C,lllld, Mile, and power source or battery l'lilf'to energize the pastersolenoid '41.

Further rotation :of the timer cam causes the cam rise 81a therecftoclose contacts i0i2a|lfi2b of switch I02 whereby to complete a'powercirv cuit via conductors 2102c, 102d, 102d, and power source orbattery I027 to energize the cutter solenoid 69.

Still further rotation of the timer cam 81 causes the rise 87a to"actuate switch H13 and close its contacts :l'03u-|03b and againcomplete a power circuit via conductors 103e, 13d and power source orbattery lfllf, conductors lflld, Nile, to the paster solenoid 4|, switchcontacts lfl3ai 03b being in parallel or shunt with the contacts [Ellalbof the first paster switch.

The foregoing circuit means therefore contemplate the operation of thetouch plate I 1'0 to trip the clutch solenoid and "free the timer disc:for one revolution, such that the paster solenoid H will be, zopenatedtwice at intervals, and, the rutzter solenoid -69 will be :operatedonce, for each cycle. It'may be :observed here that the actual startingposition 0f "the timer is shown in Fig; "3, from whichit will appearthatin each cycle the order ofoperation is: paste, cut, paste,-stop. Thereason for this orderis that the last signature 'of a-book is pasted,then the thread is cut, andithen the beginning of the next book(actually the second signature'thereo'f to be fed) is'pasted, in theinterval afforded by the three-to-one timing ratio, heretoforementioned, between the actuation of the cutter switch I02 and the secondpaster switch 1'93, before the timer, comes to rest.

'In-Fig. 8 there is shown a modified'form of (the invention :in "whichthe powerfor actuating the paster and cutter means is taken from-themain drive shaft 450: through the agency of sprocket means 83a:84:r85.ranalogous to thattdescribed in view of Fig. 1, the ratio likewisetbeing3:?1, so that the main shaft Miw'makes three revolutions to ioneof thetimer shaittllzr. I

Slip-clutch means, substantially identical to that employed in theembodiment -'of Fig. :1', .is arranged on timer shaft was and includes531011112011 "disc 86x (see also Fig. 9') floating onsaid shaft andadapted to :be "rotated therewith by 'slipclutch washer 158x urgedtherea-gainst by spring 'means 99s: as in the arrangement 'ofEig. 4.

A stop holding :pawl 959: F-ig. 9) normally-lies in thepath :of a stopnotch or nose 91:0 on the disc thereby preventingrotation of the latter;-A connecting rod 98a: connects the pawl :1: with theplunger or armature:99w :of .a tripping solenoid liwm, such that the-latter, whenenergized, will draw-the rod 989: toward the left and pull the pawl'95:: out of engagement with the clutch disc $50 that the'clutchassembly may rotate with shaft80sc.

Mechanically driven-means for actuation of the paster means-includes adouble-0r compound cam "consisting 'of two discs l Hl'a, H il'b '(Fig.9-) each having'a cam rise :or. highjpoint l liflaaciand l'lflba:

respectively, displaced from the other by approx- "imately '(tocentersof rise) A yoke H2 at the left end of an "armrl I'3 floats on the clutchshafting in bet-ween the 'two -cam discs I Ina-l Hlb, and :is providedwith twin-cam .rollers :H ia, Mb (Fig. 8) disposed to be engaged by thecamrises l leiiaac, 'l-l'flbzc. The right-hand end of arm I I3 isconnected to a crank arm H5 .fixed on-paster shaft 38x.

Iihus, when the clutch unit is free to rotate, the compound paster camwill shift the. arm 113 toward the left twice for each'completerevolution, and this .in turn rocks the paster shaft 38.2: towithdraw'the 'lock outrlever 35x'so that spring 134cc may raise thepaster actuating lever Has-and rod 30a: to rock the paster bail 26r-downand back again in the manner described in wie-w of Fig. 1. Spring means409: restores the lock-out, cooperatively with the restorative action ofthe main cam means--45az-4Bx4-7zc in the manner heretofore described.

Means for mechanically actuating the cutter The cutter cam includes arise l.20a for en- I gagement with a cam roller I21 (Fig. 9) at one endof a, long rocker arm I22 pivoted :as at I 23 on .the machine frame,with its opposite end portion I24. pivotally connected to a verticalmans; which is in turn pivotally connected at I26 to a rocker arm 12a:fixed on the cutter rock shaft 01x along with the cutter dog-leglock-out lever 66m. 1 Thus, when the clutch unit is freed to rotate forone revolution as aforesaid,the cam rise I20a on the cuttercam engagesroller HI and rocks the arm I22,clockwise so as to elevate the rod I25and 'rock the cutter rock shaft 611: clockwise,

thereby effecting withdrawal of the dog-leg lockout means 6433-651: sothat spring means 633: may elevate the cutter actuating arm Gla: and theconnectingrodffiflm to effect a stepping of the pawl and ratchet means55:13-5Ia: and thereby shift the needle plate 2Ia: through the agency ofthe crank and lever means 52x5|.r50m,- exactly in. the manner set forthin describing the operation of the embodiment of Figs. 1, 5, andfi.

=The'master control for the embodiment of Fig.

and proceeds to remove the prepared signatures. from a stock table (notshown) and open them I at the middle fold and then place them on thesaddle in the position occupied by the signature I6;with the right-handend of the fold portion against the feeding pawl I9.

Itmay be observed here that the book signatures are usually sewnbackwards, i. e. the last signature of a book is fed first and the firstsignature comes last in order of feeding. Feeding is effected by thereciprocation of pawl l9, which the-operator may keep in motion byholding down a main control pedal (not shown) and maintaininga feedingrhythm in step with the movements; of .pawl I9. Reciprocation of thefeed pawl as aforesaid transfers the signatures onto the movable saddleor wedge section I512.

When the last (actually the first of the book) signature isfed, theoperator must actuate the paste-tipping means, and in the embodiment ofboth Figs. 1 and 8, this is done by a light movement or brushing of thefingers over the touch plate H0 or 0r, it being understood that bothembodiments aforesaid are operated in the same mann'en'so far as theattendant is concerned.

Such actuation of the touch plate effects energi zation of the tripping,solenoid I00 (or I001, causing release of clutch pawl 95 (or 05:0) tofree the timer means for a cycle of operation, namely, one revolution. v

In the embodiment of Figs. 1, 3, and 7, switch IOI (contacts I0 IaI0|b)close momentarily and energize the paster solenoid 4 I, causing thepastetipping bail 26 to descend and tip the last sig nature at a timewhen it has been fed onto the movable wedge section but before thelatter has moved forward beneath the needle plate.

Immediately following, the second switch I 02 (contacts I02a.-I02b)closes to effect a cutting of the threads, thus finishing the sewing ofthe book. i

Meanwhile, unless the operator has released the master control pedal tostop the machine,

the timer cam 81 continues to rotate past the cutter switch I02 and willagain operate the paster switch I03, and during the interval be tweenoperation of the cutter'switch I02"an d the second paster switch-I03,the operator must feed the first two sections of the next book. V

The operator times the feeding so as to place the second signature(actually the neXt-to-lastof the next book) on the saddle justbefore'paster' switch I03 is operated by the tiine'r'cam, where upon thepaste bail lfiwill descend as before,

and the timer cam will come to rest in the start ing po'sitionshown inFig. 3. I

As the last signature of the book is fed, the operator againdepresses'the touch plate- III! and paster switch IUI operatesto'effecta tipping of :this'last signature; and this action is followedat once'by operationof the cutter switch I02,

it being necessary thatthe first two signatures of the next book are'fedbefore the timer cam finishes its cycle of movement and actuation of thelast paster switch I03.-

It will be understood that if the feeding rhythm is interrupted for anyreason at this juncture;

the'machine may be stopped by releasing the master control pedalheretofore mentioned and; constituting part of the previously known machine. i

Because of the foregoing cycling of the novel control means; theoperator usuallycauses the machine to perform a blank pasting andcutting operation without signatures, and stops the ma- 1 chine by meansof the master-control pedal after the :timer cam has operated switchesIOI and I02 but not the last paster switch I03, this being done'so thata new book may conveniently be started by feeding two signatures so thatthe second onev (being the neXt-to-last of the new book) will be pastedas the timer resumes and .completesits interrupted cycle by operatingpaster switch I03 and stopping. When this book is finished the touchplate I10 will be operated and 'the necessary pasting and cuttingoperation willfbexeffected by movement of the timer cam through thefirst two-thirds cycle; and the next.

book will be started so that the second signature thereof to befed willbe pasted bythe operation ofswitch I03 as the timer cam completes itsvcycle, andso on. a

The modified form' of the invention shown in Fig.8 isv operated in thesame manneras the device of Fig. 1, the mechanics involved in eachinstance differingby the use of especially contrived cam means, in placeof the electromagnetic actuating means for the paster and cuttercontrols of the embodiment of Fig. 1.

ingthe last signature "of a book (or after efiecting a blankoperation tofacilitate starting a new book as aforesaid) the tripping solenoid I001:

is energized to release the clu'tchby effecting withdrawal ofstoppirigpawl :1: asdescribe'd in detail hereinbefore.

Assuming the usual case where one book is being completed and anotherstarted; the timing'bamswill be inthe initial position shown 'inQFig. 9,and the first thing to occur will be engagement of cam rise I lllbx withcam roller H m to shift the paster connecting rod II3 to theright,-rocking the lookout arm 35:17 so "that the paster actuating lever32zc-may elevate rod 303: and lowerthe-paste'tipping bail 26w. V

Following shortly after the first operation of the paster cam asaforesaid, cam rise IZflu/on the cutter cam will engage cam roller IIIon cutter actuating lever I22; breaking the lock out 64m05at so thattheratchet means Skim- 511:

In the case of the device of Fig. 8, upon reach- V tively associatedwith saidtiming means s i e n d b lev ti of r d M. hu rook:

i s lever m m au a hi t o the nee,

die plate 2hr to loop the thread leads for cutting in the well knownmanner.

Following operation of the cutter cam means iZOa-IZI as aforesaid, theoperatorfeeds the first two sections of a new book by, the time thesecond paster cam rise l lilarengages cam'ro-ller [14a to shift theDaSter roda secondtime as aforesaid, whereupon the timercam cycle i5Qomintended to include all equivalent constructions. 2Q

a lS QQm IlaQiOnS of parts fair cqming Within he rcan V 4 I Having. thusdescribed my invention I him s. new a d de ire. p ct lay-Letters.

Patent of the United States is :v a e 1. In a book sewing machine, thecombination Withnastine andoutt ne m an ntro1,m echnis t om isings earae actuating meanszfor a d. re t n and outt ne.means...timing meansronoperating said actuating means severally. a.

predetermined timed relation, and master control means for operatingsaidtiming means to. e.fiec.e tuate timed, operation of. thepasting and.cute, time means for the; purposes and in the. manner. set forth. 1

2.. In a book sewing. machine, the combination with pasting andcuttingmechanisms oi control. means comprising a,;timer operable in; cycles,attendant controlledmeans for initiating. a cycle.

means'andsaid cutting means in timedrelationa predetermined number oftimesfor eachiopere' ating cycle aforesaid.

3. In.- abook sewing machine, the combination with pastingandcuttingmeans of a master con trol, a cyclically operable member, separatepast'er-z and cutter controlimean's actuated in a. predetermined orderby said: cyclically operable member during each cycle ofoperationthereof 'to-efi'ec tuate operation of said pastingand' cuttingmeans, and'means actuated bysaid mas'ter eon; trol for initiating a; cycle of-operation of sai'd cyclically operable'm ember. 4'. I n a book sewingmachine of the; class described, including pasting means and cuttingmeans, a manually operable touch-responsive master control, timing meansactuated 'byfsaid", master"control and actuatingbfmeans forgsa'dgpasting means and said cutting. means. beer manner that each operationof, the latter, effectuatea predetermined number of operations..

of said actuating means in a certain timed rela tionsl'iip responsive.to each touch-operation said master control.

pasting means and singular operation of said cut-L ting means. I

6, In a book sewing machine of; the clas s..de..-' scribed, whichincludes pasting means, cutting. means, andbook signature feeding means.and mechanism for operating at leastsaid pasting and cutting meansseverally, ,thecombination o1 a master control, individual actuatingmeans'coe' operable with said operating mechanism for eta... ine operaion of a d pastin meansandsaidi cutting means, together withtimingmeansunder' control of said master control for operating each ofsaid individual actuating means in acertain order and in timed relationto. operations of said feeding means. i r

-7. In. a book sewing machine of. the type which "includes pasting.means and'cutting means and;

means for actuating the same severally together: with lock-out means.for each. said pasting and cutting means and releasable fromanormallylocked condition to effect a. single;operatiorr of said,pasting and cutting means, the combination; of; master control, atimer.actuated; by said-.- master control, andmeans underco-ntrol of said.timer for effecting release of saidlock-out means;

at diflferent intervals: for each actuation. oi; the:

timer by the master control as aforesaid.

8. In a book sewing machine of the type described and' which includespasting means and cutting means,- a mainld'rive shaft, means-Tonactuating the pasting: and; cutting-- means sever all-y, together withlock-out-means foneach said: 1 actuating means: and: normally renderingthe pasting and cutting meansin operative but ra 5 .leasable. t'opermitoperation of the same-severe- I of operation of. saidtimenandmeansunder.;con-' 40,;

trol. ofsaid timer .for actuating said pasting.

'5. Ina book sewing machine of the class de scribed, which, includespasting means andgcutting nsiama t r n ro me ope bl.

les. means t at db sa d astert rolifet effecting a cycle of. operation.ofgsaid time, for, ch pe tion .of. the mas er, controlr n zmeansiactuatedby said timer duringeach;cycleofzopene.

ation thereof'for effecting.-pluralcoperation-of;said;

ally, improvements comprising:' thecombination;-

with said lock-out means of individual releasing means for eachiofthe-same, cam means cooperat ble with said shaft for restoring SaldIOK-ZK OHF- means automatically atter each, release thereofj timingmeans drivenfrom saidshaf-t cyclicallyt releasable meansnormallyrestraining cyclic .op eration of said-timing means; a mastercontrol,

means actuated by said master controlfor effectingrelease ofsaidreleasable means tainitiat'ea cycle of operation of-said timing-means, and; meansoperated duringeach cycle ofop'eration of the timingmeans for actuating said individual releasing predetermined manner:

9. In* a book sewing machineof the class described, inclu dingipaisting;and cutting mechaans for the look-out means in'fa;

nisms, together with" aisignajtureafeeding pawlj' driven from a,maindriving source at a certaf at t l m an mt i' qnli me s; adapted to.rotate, slip-clutch .means con necting, saidf timing. means with said.main. driyingsource releasable holding means. normally.restraining.)

rotationof said timing means, a master..con.trol,,[ for .said. timingmeans, tripping nieans actuated e i ;masteawe reli l e! eamless.

a stmmrmit; tet ont t e me n -act t db 31 m na een rotation. thereof;for efigectln opepation of ;Sg,1 i;

pasting.andicntt nermechen smsmi imed relationt. to each otherwand to.the driving rate noi; saittn;

feedinggpawl, 10,, In.:.a,,bo.o.k. sewing-, .machinez .ofthei type; sateforth which, includes pasting;,andi-cuttingmecha nisms and a signaturereceiving saddle with ciprocable. si nature. ieeding.meansrthereom. con

trol .means. comprisin a masten controlsmollntea eds closelyg adjacent.said. saddle,v timing means;

actuatedbmsaid; master. contr.ol,.and.:me.ans opal,

erated by said timing means for effecting operation of said pasting andcutting mechanisms, in

a predetermined order and at a certain rate with respect to the rate ofreciprocation of said feeding means.

11. In a book sewing machine of the type described which includespasting and cutting mechanisms and a signature receiving saddle withsignature feeding means thereon, control means comprising: atouch-responsive master control member mounted on said saddle as apartthereof and in position to be engaged bythe hand of an operatordepositing signatures on the saddle,

and timing means actuated by said master control for effecting timedoperations of'said pasting and cutting mechanisms in a predeterminedmanner responsive to each operation of the master control.

12 The combination set forth in claim 11 in which said saddle includes aplane surface pitched atan angle with respect to the vertical, and saidmaster control includes a plane surface portion arranged to lie normallyin approximately flush relation to said surfaceof the saddle.

13. The combination, with pasting and cutting mechanisms in a booksewing machine, of a signature-feeding saddle having a touch-responsivemaster control associated therewith with at least a portion of saidcontrol lying inra plane which includes a portion of said saddle, andactuating means for said pasting and cutting mechanisms operativelycontrolled by said master control.

14 In a book sewing machine, means for pasting signatures and sections,means for cutting sewing threads, electromagnetic means for severallyactuating said pasting and cutting means, a rotatabletimer, a masterswitch and means controlled thereby for efiecting predetermined rota--tion of said timer, together with switch means for actuating each ofsaid electromagnetic 'means and arranged for operation in a certainorder by said timer upon rotation thereof.

15. In a book sewing machine of the class described which includespasting mechanism, cutting mechanism, and signature feeding means,

control means comprising: a rotatable timer cam, a plurality of switchesarranged for operation in succession by said cam upon rotation thereof,electrically controlled means each actu-'-. 'ated by one of saidswitches and operable to actuate said pasting mechanism and said cuttingmechanism respectively, means'for rotating said cam at a predeterminedrate correlated to the rate of operation of said feeding mechanism, and

master control means for starting and stopping said cam.

16. The combination of claim further characterized in that said mastercontrol means forms a part of said feeding means.

17. In a book sewing machine of the type which includes a signaturesaddle having at least one surfaceinclined in a plane slopingdownwardly, the combination with said saddle of a control member havinga planar surface portion normally adapted to be disposed inapproximately flush relation with said first-mentioned surface andfurther adapted to pivot about an axis closely parallel to said plane,and a control device actuated by said control member and including meansnormally urging said control member into the flush position aforesaid.

18. In a book sewing machine, in combination, pasting means, meansnormally urging said pasting means into operative position, lock-outmeans normally restraining movement 'of said pasting means intooperative position, cutting means and means normally urging the same incutting action, lock-out means normally restraining said cutting meansfrom cutting action, signature feeding means, means-for driving saidfeeding 'means at a determined'rate, timing means including cam meansarranged for joint rotation from a starting position, means for rotatingsaid cam means at a predetermined rate relative to said determined rateby said driving means, means for controlling rotation of said cam' meansin cycles, and mechanism actuated by said cam means during each cycle ofoperation thereof for effecting release of said lock-out meansrespectively in a certain order, together with means for automaticallyrestoring said lock-out means to locking condition following eachrelease thereof as aforesaid. I

19. In abook forming machine of the type which includes a plurality ofmechanisms for performing book forming operations, which mechanisms areadapted to .be driven from a a common driving source in a predeterminedtimed relationship and are adapted to be severally actuatedbyoperation'of actuating means provided therefor, improvementscomprising'and characterized by: provision of controls for each saidactuating means; timing means common to said controls and operable toeffect actuation thereof for operating said actuating means in apredetermined order; means cooperable with said common driving sourcefor driving said timingmeans; and means adapted to be actuated by anoperator for starting and stopping said timing means.

- 20. In a book forming machine of the class which includes knownmechanisms for effecting forming operations upon book esignatures, and

operator-controlled means for effecting actuation of said mechanisms,improvements comprising and characterized by: the provision of asignature-receiving saddle including an in-' clined surface upon whichportions, at least, of said signatures are received; master controlmeans including a'movable member having a surface normally disposed'within a portion of the plane of said surface of the saddle so as to liein approximately flush relation therewith, said member being mounted tomove out of said flush relation; a controlling device actuated by saidmovable member and including a movable partnormally disposing saidmovable member in said flush relation, whereby an operator in placing asignature upon the saddle may by a continuing movement of the hand touchsaid movable member and actuate the aforesaid mechanisms for effectingforming operations.

7 WILLIAM B. I-lILDMANN.

